drivers: clock_control: stm32: Implement F412 PLL I2S Support

Add PLLI2S support within clock_control driver.
This implementation is compatible with "st,stm32f412-plli2s-clock"
binding.

Signed-off-by: Erwan Gouriou <[email protected]>

Author: erwango

drivers/clock_control/clock_stm32_ll_common.h

@@ -69,6 +69,9 @@
 #define z_pllr(v) LL_RCC_PLLR_DIV_ ## v
 #define pllr(v) z_pllr(v)
 
+#define z_plli2s_m(v) LL_RCC_PLLI2SM_DIV_ ## v
+#define plli2sm(v) z_plli2s_m(v)
+
 #define z_plli2s_r(v) LL_RCC_PLLI2SR_DIV_ ## v
 #define plli2sr(v) z_plli2s_r(v)
 

drivers/clock_control/clock_stm32f2_f4_f7.c

@@ -71,10 +71,17 @@ void config_pll_sysclock(void)
 __unused
 void config_plli2s(void)
 {
+#if DT_HAS_COMPAT_STATUS_OKAY(st_stm32f4_plli2s_clock)
 	LL_RCC_PLLI2S_ConfigDomain_I2S(get_pll_source(),
 				       pllm(STM32_PLLI2S_M_DIVISOR),
 				       STM32_PLLI2S_N_MULTIPLIER,
 				       plli2sr(STM32_PLLI2S_R_DIVISOR));
+#elif DT_HAS_COMPAT_STATUS_OKAY(st_stm32f412_plli2s_clock)
+	LL_RCC_PLL_ConfigDomain_I2S(get_pll_source(),
+				       plli2sm(STM32_PLLI2S_M_DIVISOR),
+				       STM32_PLLI2S_N_MULTIPLIER,
+				       plli2sr(STM32_PLLI2S_R_DIVISOR));
+#endif
 }
 
 #endif /* STM32_PLLI2S_ENABLED */